DOI: 10.1029/2019GL086492
论文题名: Sea Level Budgets Should Account for Ocean Bottom Deformation
作者: Vishwakarma B.D. ; Royston S. ; Riva R.E.M. ; Westaway R.M. ; Bamber J.L.
刊名: Geophysical Research Letters
ISSN: 948276
出版年: 2020
卷: 47, 期: 3 语种: 英语
英文关键词: altimetry
; GRACE
; ocean bottom deformation
; sea level budget
; solid-Earth response
; steric
Scopus关键词: Budget control
; Deformation
; Surface waters
; altimetry
; Glacial Isostatic Adjustments
; GRACE
; Mass change
; Sea surface height
; Solid earth
; steric
; Steric sea level
; Sea level
英文摘要: The conventional sea level budget (SLB) equates changes in sea surface height with the sum of ocean mass and steric change, where solid-Earth movements are included as corrections but limited to the impact of glacial isostatic adjustment. However, changes in ocean mass load also deform the ocean bottom elastically. Until the early 2000s, ocean mass change was relatively small, translating into negligible elastic ocean bottom deformation (OBD), hence neglected in the SLB equation. However, recently ocean mass has increased rapidly; hence, OBD is no longer negligible and likely of similar magnitude to the deep steric sea level contribution. Here, we use a mass-volume framework, which allows the ocean bottom to respond to mass load, to derive a SLB equation that includes OBD. We discuss the theoretical appearance of OBD in the SLB equation and its implications for the global SLB. ©2020. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159262
Appears in Collections: 气候变化与战略
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作者单位: School of Geographical Sciences, University of Bristol, Bristol, United Kingdom; Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, Netherlands
Recommended Citation:
Vishwakarma B.D.,Royston S.,Riva R.E.M.,et al. Sea Level Budgets Should Account for Ocean Bottom Deformation[J]. Geophysical Research Letters,2020-01-01,47(3)